Metallic tunnel-lining.



R.. B. WOODWORTH.

METALLIC TUNNEL LINING.

APPLICATION FILED DE01?, 1909.

Patented Feb. 14, 1911.

WITNESSES ROBERT B. WOODWORTH, 0F PITTSBURG, PENNSYLVANIA.

METALLIC TUNNEL-LINING.

Specification of Letters Patent.

Application filed December 17, 1909.

Patented Feb. 14, 1911.

Serial No. 533,651.

To all whom it may concem:

Be it known that I, ROBERT B. lVooD- WORTH, of Pittsburg, Allegheny county, and State of Pennsylvania, have invented a new and useful Improvement in Metallic Tunnel-Linings, ,of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a partial plan and Fig. 2 a transverse section on the line II-Il of Fig. 1 showing a tunnel lining made in accordance with my invention. Fig. 3 is a detail sectional end view on a larger scale showing the construction of the longitudinal joints in the lining and the manner in which the lining is calked in making i'luid pressure tight joints. Fig. 4 is a detail longitudinal sectional View taken on the line IV-IV of Fig. 3 and showing` the construct-ion of the transverse joints in the tunnel lining' shown in Figs. l, 2 and 3, and the manner in which the joints in this construction are calked. Fig. 5 is a detail perspective view showing the manner in which the sections forming the tunnel lining of Figs. 1, 2 and 3 are assembled together in place.

My invention, relates to the construction of metallic linings for tunnels, conduits and similar openings and the object of the invention is to provide a metallic tunnel lining of novel construction in which standard rolled metal shapes are employed in forming the lining.

A -further object of the invention is to provide a tunnel lining having novel means for inserting the shutter enclosing plate in place in segments' of the lining as completed and to provide improved means for calking the lining in rendering it `water or air tight.

In the drawings, a segmental lining is shown which is formed of built-up segments constructed and arranged in accordance with my invention.- The lining is built up in place in the tunnel as the excavation proceeds and after all of the segments forming a section are assembled together the space between the earth Walls of the tunnel and ythe outer surface of the lining is filled with 0 grout or cement.

Each section of the tunnel is preferably made up of a number of symmetrical s egments 2, which are identical in construction,

- and of sections 3 and 4 each having one end constructed the same as that of its adjoining section 2 -and each have one end constructed so as to lit the shutter plate 5 by which the ring of segments is completed to form a section of the tunnel' The segments 2 are formed of `standard rolled metal channel beams having a web portion 6 and flange portions 7 At the end of -each section an angle i'ron 8 is secured by rivets 9 and at suitable distances in the length of each section stiffening angles 10 are securely riveted to the web 6 of the channels.

The abutting faces of the angles 8 on the sections 2 radiate from a common center' while the sections 3 and 4 each in one end have one angle which radiates from the center of curvature and on the opposite end of each of these sections an angle which is in a non-radial position and which is arranged to be parallel with the faces of the end angles on the shutter plate 5.

The faces of the integral flanges 7 on the channels forming the sections 2, 4 and 5 are parallel and are provided with suitable openings through which rivets or bolts l2 are inserted in securing the sections together.

Each ring of the tunnel formed of the sections 2, 3, 4 and 5 is staggered relatively to the adjoining section so that the longitudinal joints are broken and the shutter plate in any one section is not opposite the shutter plate on the adjoining sections, this construction being best shown in Fig. 1.

As shown in Figs. 1 to 5, the segments forming each section vof the tunnel lining are formed of rolled metal channel beams as before and are provided on their ends with securing angles. The channels are provided with flanges of varying lengths, one flange being slightly wider than that onthe opposite edge of the web of the channel. The end connecting angles are also made with the leg on one angle longer than thatof the abutting leg of the angle on the adjoining segment of the lining, in this way provision being made for calking the lining so as to provide a Water tight joint between the sections.

The bolts are provided with taper Washers on account of the tapering inner surfaces on the flanges of the channel beams.

In the erection of a tunnel made up of segments constructed as shown and described, the segments 2, in each section are placed in position in the tunnel and are secured together by means of bolts or rivets as desired. The segments 3 and 4 are put into place, preferably at the top of the lining inthe location shown in the drawings. After the segments 2, 3 and 4 have been assembled in place, 'the shutter, plate 5 is inserted, the parallel or reversely tapered sides of this shutter plate permitting its being placed in position after the other ofl its segments are in place. The successive sections are put into place in a similar manner andthe circumferential joints are made by means of rivets or bolts.

After the sections are in place grout is pumped or caused to flow into the space between the earth wall of the tunnel and the outer surface of the lining. The joints are then calked by a calking tool in the ordinary manner, the short leg on one of each of the two anglesforming the connection between the sections lending itself to further the calking operation.

The advantages of my invention will be apparent to those .skilledin the art. A tunnel lining constructed as shown and described issimple and can be easily and cheaply made. rlhe sections are made of such size. as to be easilyvtransported and handled in being put into place. By using standard rolled metal shapes, the amount of shop work necessary is reducedf-Tlrelparallel edges of the rolled metal shapes are sufficiently accurate to not require machining in order to make tight joints, and in this way the cost of forming the segments is greatly reduced.

Modifications in the construction and arrangement of the parts may be made without departing from my invention.

I claim: y

1. A sectional metal tunnel lining, the sec tions comprising a plurality of segments and a shutter plate formed of rolled metal channel beams, said shutter plate being adapted to Ybe inserted in place after its eenen? adjoining segments have been erected the adjoining flanges of adjacent se 'ments :varying in widthsubstantially as escribed.

2. A tunnel lining comprising a plurality of annular sections, each sect1on having a pluralityof segments formed ofrolle'd metal channel beams, means on each segment for detachably securing the segments together,

the adjacent -Hanges of adjoining segments side and end of each segment being of less width than those on its opposite side and end; substantially as described.

4. In a metallic tunnel lining, a lining segmentvformed from a rolled metal channel beam, and having means on its endsA by which the segments aresecured together, the flanged edges on one side and end of each segment being of less width than the flanges on the adjoining end and side of the .adjacent segment; substantially,as described.

5. A metallic tunnel lining comprising a plurality of annular sections each section having flanged marginal edges, the adjacent flanges of adjoining segments varyin in width to provide for calking; substantially as described. j

6. In a metallic tunnel lining, a segment having flanges on its marginal ledges, the flanges on one side and end thereof being of less width than those on the opposite side 4and end; substantially as described.

In testimony whereof, I have hereunto setA Ymy hand.

RUBERT B. WOODWUR'II-I. Witnesses:

GEO. W. RITCHEY,

GERTRUDE Sonoran. 

